Square hole machining milling cutter

Abstract

The utility model discloses a square hole machining milling cutter which comprises a cutter handle and a cutter body, one end of the cutter handle is connected with the cutter body, the cutter handle is cylindrical, and the section of the cutter body is rectangular. The knife handle and the knife body are connected through a connecting part, and the section of the connecting part is rectangular. By means of the milling cutter and the machining method, square hole machining can be completed through milling conducted by being used in cooperation with the milling cutter A. Compared with the prior art through wire penetrating pre-hole machining and wire cutting, the machining time of each square hole can be saved by 5 minutes, the production efficiency is greatly improved in large-scale machining, the production cost is reduced, and the machining efficiency is improved. The milling cutter disclosed by the utility model is suitable for processing aluminum profiles. The square-hole-containing strut piece machined by the milling cutter has the characteristic of high specification uniformity of the square holes, and is suitable for being used as a skeleton strut part.

Description

Technical Field

[0001] The utility model belongs to the technical field of square hole processing, in particular to a square hole processing milling cutter. Background Art

[0002] In processing Figure 3 In the case of the aluminum profile skeleton support parts shown, the parts require multiple right-angled square holes that need to be precisely machined, and the relative positions of the holes and the square holes are highly demanding. The existing process method is to first use a CNC milling machine to process the pre-holes for threading, and then use wire cutting to process them into right-angled square holes. Since wire cutting requires manual threading for each hole, the operation process is cumbersome and the threading time is long. This method results in a cumbersome processing operation process and a long processing time, resulting in extremely high processing costs and extremely low processing efficiency. Therefore, a more efficient square hole processing method is needed.

[0003] The patent document with announcement number CN113334497A discloses a method for manufacturing a square hole forming device for a plastic frame, including the following steps: S1: preparing a punching tool, grinding one end of the end mill with a spiral cutting edge into a square cylinder on a grinder to form a punch head, and keeping the other end of the end mill in its original shape to form a clamping part; processing the end face of the punch head away from the clamping part into an inwardly concave spherical surface, the spherical surface intersects with the side of the punch head to form an arc-shaped cutting edge, and the spherical surface intersects with the edge of the punch head to form a cutting tip to obtain a punching tool; S2: preparing a blanking plate, processing a square blanking hole on a pad iron that is compatible with the punch head on the punching tool in step S1 to obtain a blanking plate.

[0004] The invention also discloses a plastic frame square hole forming device manufactured using the aforementioned method, as well as a method for using the device. This invention allows square holes to be directly punched out of plastic frame parts, completing the single square hole forming operation in a single punching operation, unlike the milling method used in the present application. Furthermore, the punching tool in this invention requires wire machining, and its shape differs from that of the milling cutter B of the present invention.

[0005] Patent document CN116237566A discloses a method for milling right-angled gold finger plates and a machining method using a multi-edge milling cutter. The method includes the following steps: using a controlled depth machining method to repair the gold finger edge. The tool path of the controlled depth machining method follows the edge of the gold finger and passes through the connection between the gold finger and the lead. The tool removal rate is controlled to 5-50μm / r, and the machining depth is set to H1-H1+10μm, thereby severing or removing the lead to obtain a gold finger structure with a smooth cutting surface; then, replacing the end mill, milling the substrate layer within the machining area to obtain a gold finger plate with a cutting surface perpendicular to the plate surface. The invention's right-angled gold finger milling method reduces the likelihood of burrs on the gold finger plate during the molding process by separately removing the lead portion and the corresponding substrate layer portion and controlling the tool removal rate, thereby improving the molding quality of the gold finger plate. It eliminates the need for manual processing or chamfering, improves the molding yield rate, and reduces costs.

[0006] This invention's processing steps differ from those of the present application, and it focuses on milling right-angled gold finger plates, which differs from the present application's focus on processing square holes. The invention aims to address the technical problems of reducing the incidence of burrs on gold finger plates during forming, improving yield, and reducing costs, which differ from the present application's technical problem of improving square hole processing efficiency. The cross-section of the deep-processing tool and end mill in this invention is circular, a shape different from that of the milling cutter B in the present application. Summary of the Invention

[0007] In order to solve the above technical problems, the utility model provides a square hole processing milling cutter.

[0008] The utility model is achieved through the following technical solutions.

[0009] The utility model provides a square hole processing milling cutter, which comprises a cutter handle and a blade body. One end of the cutter handle is connected to the blade body. The cutter handle is cylindrical, and the cross section of the blade body is rectangular.

[0010] Preferably, the handle and the blade are connected via a connecting portion, and the cross-section of the connecting portion is rectangular.

[0011] Preferably, the cross-sectional area of ​​the connecting portion is smaller than the cross-sectional area of ​​the shank, and the four sides of the connecting portion are R0.5-2.

[0012] Preferably, the four side surfaces of the blade are symmetrical about the center of the blade, with a symmetry of 0.01-0.04 mm.

[0013] Preferably, a cutting edge groove is provided at one end of the blade body, and the cutting edge groove is V-shaped.

[0014] Preferably, the inclined surfaces of the two cutting edge grooves are inclined at 130-170 degrees.

[0015] Preferably, cutting edge surfaces are symmetrically arranged on both sides of the blade body, and the center line c of the cutting edge surface is parallel to the connecting line d of the cutting edge groove.

[0016] The beneficial effects of the present invention are:

[0017] The milling cutter and machining method of the present invention, used in conjunction with milling cutter A, can complete square hole machining. Compared to the prior art method of threading pre-holes and wire cutting, each square hole can be machined with 5 minutes less time, significantly improving production efficiency and reducing production costs in large-scale machining. The milling cutter of the present invention is suitable for machining aluminum profiles. Pillar components containing square holes machined using the milling cutter of the present invention have a high degree of uniformity in square hole specifications, making them suitable for use as skeletal pillar components. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural diagram of the utility model;

[0019] Figure 2 It is a structural diagram of the utility model;

[0020] Figure 3 This is a structural diagram of the utility model for processing a pillar member containing a square hole;

[0021] Figure 4 This is a structural diagram of the utility model for processing a pillar member containing a square hole;

[0022] Figure 5 This is a structural diagram of the utility model for processing a pillar member containing a square hole;

[0023] Figure 6 This is a structural diagram of the utility model for processing a hole A of a pillar member containing a square hole;

[0024] In the figure: 1-hole A, 2-square hole, 3-handle, 4-blade, 41-cutting edge groove, 42-cutting edge surface, 5-connecting part, 6-pillar body, 61-through hole A, 62-through hole B, 7-side plate A, 71-groove, 8-side plate B, 81-through hole C. DETAILED DESCRIPTION

[0025] The technical solution of the present invention is further described below, but the scope of protection claimed is not limited to the described solution.

[0026] Example:

[0027] like Figures 1 to 6 As shown, a square hole processing milling cutter includes a shank 3 and a blade body 4. One end of the shank 3 is connected to the blade body 4. The shank 3 is cylindrical and can be prepared using a Ф10 old alloy tool.

[0028] The four sides of the blade body 4 are symmetrical about the center of the blade body 4, with a symmetry of 0.01-0.04mm, preferably 0.02mm. The cross-section of the blade body 4 is a 6mm square. The handle 3 and the blade body 4 are connected by a connecting portion 5. The cross-section of the connecting portion 5 is a 5mm square. The cross-sectional area of ​​the connecting portion 5 is smaller than the cross-sectional area of ​​the handle 3. The four sides of the connecting portion 5 are R0.5-2, preferably R1.

[0029] A cutting edge groove 41 is provided at one end of the blade body 4 . The cutting edge groove 41 is symmetrically and tilted about the center of the blade body 4 , and is V-shaped.

[0030] The inclined surface of the cutting edge groove 41, that is, the angle a is inclined at 130-170 degrees, preferably 160 degrees. The cutting edge surfaces 42 are symmetrically arranged on both sides of the blade body 4, and the center line c of the cutting edge surface 42 is parallel to the connecting line d of the cutting edge groove 41.

[0031] A method for machining a square hole using a milling cutter comprises the following steps:

[0032] S1: Clamp the material on the machine tool with a vise, and first use milling cutter A to mill the material to form hole A1.

[0033] S2: Then use milling cutter B to mill hole A1 until square hole 2 is formed.

[0034] In step S1, a gap R1-2.5 is left at the right angle of hole A1. Figure 6 At b, R1.5 is preferred.

[0035] In step S2, the milling cutter B mills the hole A1 from the inner side of the raw material, and removes R1-2.5 to a right angle in layers, finally forming a square hole 2.

[0036] The milling cutter A is an end mill, and the milling cutter B is a square hole processing milling cutter of this application.

[0037] A support member with a square hole includes a support body 6, a side plate A7 and a side plate B8. One side of the support body 6 is connected to the side plate A7, and the other side of the support body 6 is connected to the side plate B8. The side plate A7 is perpendicular to the side plate B8.

[0038] The pillar body 6 has the same length as the side panel A7 and the side panel B8. A through hole 61A and a through hole B62 are provided on the pillar body 6. The through hole 61A is provided along the length direction of the pillar body 6, so that the pillar body 6 is hollow. The through hole B62 is provided on one side of the pillar body 6. A square hole 2 and a groove 71 are provided on the side panel A7. The groove 71 is provided along the length direction of the side panel A7. The groove 71 is provided on the side of the side panel A7 away from the side panel B8, and the square hole 2 is provided in the groove 71. A through hole C81 is provided on the side panel B8.

Claims

1. A square hole processing milling cutter, characterized by: The knife comprises a handle (3) and a blade (4), wherein one end of the handle (3) is connected to the blade (4), the handle (3) is cylindrical, and the cross section of the blade (4) is rectangular; The handle (3) and the blade (4) are connected via a connecting portion (5), and the connecting portion (5) has a rectangular cross section; The cross-sectional area of ​​the connecting portion (5) is smaller than the cross-sectional area of ​​the shank (3), and the four sides of the connecting portion (5) are R0.5-2; A cutting edge groove (41) is provided at one end of the blade body (4), and the cutting edge groove (41) is V-shaped; Cutting edge surfaces (42) are symmetrically arranged on both sides of the blade body (4), and a center line c of the cutting edge surface (42) is parallel to a connecting line d of the cutting edge groove (41).

2. A square hole machining milling cutter according to claim 1, characterized in that: The four side surfaces of the blade (4) are symmetrical about the center of the blade (4), and the degree of symmetry is 0.01-0.04 mm.

3. The square hole machining milling cutter according to claim 1, characterized in that: The inclined surfaces of the two cutting edge grooves (41) are inclined at 130-170 degrees.

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